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Structural Styles of the Longmenshan Thrust Belt and Evolution of the Foreland Basin in Western Sichuan Province, China
Author(s) -
Hefu Liu,
Huishe Liang,
Liguo Cai,
Fei Shen
Publication year - 1994
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1994.mp7004001.x
Subject(s) - geology , foreland basin , tectonics , basement , seismology , thrust , structural basin , subduction , fault (geology) , thrust fault , paleontology , geomorphology , geography , physics , archaeology , thermodynamics
The Longmenshan thrust system consists of two major groups of structural styles according to the depth of their involvement: basement thrusts ‐ compressional fault blocks; fold ‐ thrust system in the cover. In cross ‐ section, the Longmenshan structural belt is divided into 5 zones. The propagation of the Longmenshan thrust system is piggy ‐ back due to pushing at the early stage and overstep due to gravity sliding at the late stage. Balanced cross ‐ sections and palinspastic reconstruction reveal that the total sliding displacement of the thrust system amounts to 120 km. The tectonic evolution of the Tethys domain in western Sichuan has experienced 5 stages: continental break ‐ up; ocean ‐ continent subduction; continent ‐ arc collision; orogenic thrusting; uplift of western Sichuan.